Nathan Bossart [Mon, 1 Jul 2024 15:18:26 +0000 (10:18 -0500)]
Add --no-sync to pg_upgrade's uses of pg_dump and pg_dumpall.
There's no reason to ensure that the files pg_upgrade generates
with pg_dump and pg_dumpall have been written safely to disk. If
there is a crash during pg_upgrade, the upgrade must be restarted
from the beginning; dump files left behind by previous pg_upgrade
attempts cannot be reused.
Reviewed-by: Peter Eisentraut, Tom Lane, Michael Paquier, Daniel Gustafsson
Discussion: https://postgr.es/m/
20240503171348.GA1731524%40nathanxps13
Peter Eisentraut [Mon, 1 Jul 2024 14:40:25 +0000 (16:40 +0200)]
Remove useless extern keywords
An extern keyword on a function definition (not declaration) is
useless and not the normal style.
Discussion: https://www.postgresql.org/message-id/flat/
e0a62134-83da-4ba4-8cdb-
ceb0111c95ce@eisentraut.org
Alvaro Herrera [Mon, 1 Jul 2024 11:58:22 +0000 (13:58 +0200)]
Fix copy-paste mistake in PQcancelCreate
When an OOM occurred, this function was incorrectly setting a status of
CONNECTION_BAD on the passed in PGconn instead of on the newly created
PGcancelConn.
Mistake introduced with
61461a300c1c. Backpatch to 17.
Author: Jelte Fennema-Nio <
[email protected]>
Reported-by: Noah Misch <[email protected]>
Discussion: https://postgr.es/m/
20240630190040[email protected]
David Rowley [Mon, 1 Jul 2024 09:19:01 +0000 (21:19 +1200)]
Add context type field to pg_backend_memory_contexts
Since we now (as of v17) have 4 MemoryContext types, the type of context
seems like useful information to include in the pg_backend_memory_contexts
view. Here we add that.
Reviewed-by: David Christensen, Michael Paquier
Discussion: https://postgr.es/m/CAApHDvrXX1OR09Zjb5TnB0AwCKze9exZN%3D9Nxxg1ZCVV8W-3BA%40mail.gmail.com
Peter Eisentraut [Mon, 1 Jul 2024 06:50:29 +0000 (08:50 +0200)]
Remove useless code
BuildDescForRelation() goes out of its way to fill in
->constr->has_not_null, but that value is not used for anything later,
so this code can all be removed. Note that BuildDescForRelation()
doesn't make any effort to fill in the rest of ->constr, so there is
no claim that that structure is completely filled in.
Reviewed-by: Tomasz Rybak <[email protected]>
Discussion: https://www.postgresql.org/message-id/flat/
a368248e-69e4-40be-9c07-
6c3b5880b0a6@eisentraut.org
Peter Eisentraut [Mon, 1 Jul 2024 06:50:10 +0000 (08:50 +0200)]
Remove useless initializations
The struct is already initialized to all zeros right before this, and
randomly initializing a few but not all fields to zero again has no
technical or educational value.
Reviewed-by: Tomasz Rybak <[email protected]>
Discussion: https://www.postgresql.org/message-id/flat/
a368248e-69e4-40be-9c07-
6c3b5880b0a6@eisentraut.org
Peter Eisentraut [Mon, 1 Jul 2024 06:39:07 +0000 (08:39 +0200)]
doc: Clarify that pg_attrdef also stores generation expressions
This was documented with pg_attribute but not with pg_attrdef.
Reported-by: jian he <[email protected]>
Discussion: https://www.postgresql.org/message-id/CACJufxE+E-iYmBnZVZHiYA+WpyZZVv7BfiBLpo=T70EZHDU9rw@mail.gmail.com
Amit Kapila [Mon, 1 Jul 2024 06:06:56 +0000 (11:36 +0530)]
Rename standby_slot_names to synchronized_standby_slots.
The standby_slot_names GUC allows the specification of physical standby
slots that must be synchronized before the logical walsenders associated
with logical failover slots. However, for this purpose, the GUC name is
too generic.
Author: Hou Zhijie
Reviewed-by: Bertrand Drouvot, Masahiko Sawada
Backpatch-through: 17
Discussion: https://postgr.es/m/
[email protected]
Peter Eisentraut [Mon, 1 Jul 2024 05:30:38 +0000 (07:30 +0200)]
Apply COPT to CXXFLAGS as well
The main use of that make variable is to pass in -Werror. It makes
sense to apply this to C++ as well.
Reviewed-by: Tom Lane <[email protected]>
Reviewed-by: Andres Freund <[email protected]>
Discussion: https://www.postgresql.org/message-id/flat/
fe3e200c-edee-44e0-a6e3-
d45dca72873b%40eisentraut.org
Michael Paquier [Mon, 1 Jul 2024 05:26:25 +0000 (14:26 +0900)]
Use pgstat_kind_infos to read fixed shared statistics
Shared statistics with a fixed number of objects are read from the stats
file in pgstat_read_statsfile() using members of PgStat_ShmemControl and
following an order based on their PgStat_Kind value.
Instead of being explicit, this commit changes the stats read to iterate
over the pgstat_kind_infos array to find the memory locations to read
into, based on a new shared_ctl_off in PgStat_KindInfo that can be used
to define the position of this stats kind in shared memory. This makes
the read logic simpler, and eases the introduction of future
improvements aimed at making this area more pluggable for external
modules.
Original idea suggested by Andres Freund.
Author: Tristan Partin
Reviewed-by: Andres Freund, Michael Paquier
Discussion: https://postgr.es/m/
[email protected]
Tom Lane [Mon, 1 Jul 2024 03:20:57 +0000 (23:20 -0400)]
Further weaken new pg_createsubscriber test on Windows.
Also omit backslashes (\) in the generated database names on Windows.
As before, perhaps we can revert this after updating affected
buildfarm animals.
Discussion: https://postgr.es/m/
2509767.
1719773880@sss.pgh.pa.us
Michael Paquier [Mon, 1 Jul 2024 01:08:00 +0000 (10:08 +0900)]
Format better code for xact_decode()'s XLOG_XACT_INVALIDATIONS
This makes the code more consistent with the surroundings.
Author: ChangAo Chen
Reviewed-by: Ashutosh Bapat
Discussion: https://postgr.es/m/CAExHW5tNTevUh58SKddTtcX3yU_5_PDSC8Mdp-Q2hc9PpZHRJg@mail.gmail.com
Michael Paquier [Mon, 1 Jul 2024 00:55:37 +0000 (09:55 +0900)]
doc: Add ACL acronym for "Access Control List"
Five places across the docs use this abbreviation, so let's use a proper
acronym entry for it.
Per suggestion from me.
Author: Joel Jacobson
Reviewed-by: Nathan Bossart, David G. Johnston
Discussion: https://postgr.es/m/
9253b872-dbb1-42a6-a79e-
b1e96effc857@app.fastmail.com
Michael Paquier [Mon, 1 Jul 2024 00:35:36 +0000 (09:35 +0900)]
Remove PgStat_KindInfo.named_on_disk
This field is used to track if a stats kind can use a custom format
representation on disk when reading or writing its stats case. On HEAD,
this exists for replication slots stats, that need a mapping between an
internal index ID and the slot names.
named_on_disk is currently used nowhere and the callbacks
to_serialized_name and from_serialized_name are in charge of checking if
the serialization of the stats data should apply, so let's remove it.
Reviewed-by: Andres Freund
Discussion: https://postgr.es/m/
[email protected]
David Rowley [Mon, 1 Jul 2024 00:11:10 +0000 (12:11 +1200)]
Improve enlargeStringInfo's ERROR message
Until now, when an enlargeStringInfo() call would cause the StringInfo to
exceed its maximum size, we reported an "out of memory" error. This is
misleading as it's no such thing.
Here we remove the "out of memory" text and replace it with something
more relevant to better indicate that it's a program limitation that's
been reached.
Reported-by: Michael Banck
Reviewed-by: Daniel Gustafsson, Tom Lane
Discussion: https://postgr.es/m/18484-
3e357ade5fe50e61@postgresql.org
Michael Paquier [Sun, 30 Jun 2024 22:56:10 +0000 (07:56 +0900)]
Stamp HEAD as 18devel.
Let the hacking begin ...
Michael Paquier [Sun, 30 Jun 2024 22:35:01 +0000 (07:35 +0900)]
Run pgperltidy
This is required before the creation of a new branch. pgindent is
clean, as well as is reformat-dat-files.
perltidy version is v20230309, as documented in pgindent's README.
Tom Lane [Sun, 30 Jun 2024 21:33:06 +0000 (17:33 -0400)]
Temporarily(?) weaken new pg_createsubscriber test on Windows.
Don't include double-quotes (") in the generated database names
on Windows. Doing so tickles a bug in older versions of IPC::Run,
which fail to quote command line arguments correctly for that
platform. Possibly we can revert this after updating affected
buildfarm animals.
Discussion: https://postgr.es/m/
2509767.
1719773880@sss.pgh.pa.us
Tomas Vondra [Sun, 30 Jun 2024 17:26:12 +0000 (19:26 +0200)]
Add PG_TEST_PG_COMBINEBACKUP_MODE
Introduces an environment variable PG_TEST_PG_COMBINEBACKUP_MODE, that
determines copy mode used by pg_combinebackup in TAP tests. Defaults to
"--copy" but may be set to "--clone" or "--copy-file-range" to use the
alternative stategies.
Reported-by: Peter Eisentraut
Discussion: https://postgr.es/m/
48da4a1f-ccd9-4988-9622-
24f37b1de2b4%40eisentraut.org
Tomas Vondra [Sun, 30 Jun 2024 17:20:02 +0000 (19:20 +0200)]
Add pg_combinebackup --copy option
Introduces --copy as an alternative to --clone and --copy-file-range.
This option simply picks the default mode to copy files, as if none of
the options was specified. This makes pg_combinebackup options more
consistent with pg_upgrade, and it makes testing simpler.
Reported-by: Peter Eisentraut
Discussion: https://postgr.es/m/
48da4a1f-ccd9-4988-9622-
24f37b1de2b4%40eisentraut.org
Tomas Vondra [Sun, 30 Jun 2024 17:02:00 +0000 (19:02 +0200)]
Add headers needed by pg_combinebackup --clone
The code for file cloning existed, but was not reachable as it relied on
constants from missing headers. Due to that, on Linux --clone always
failed with
error: file cloning not supported on this platform
Fixed by including the missing headers to relevant places. Adding the
headers revealed a couple compile errors in copy_file_clone(), so fix
those too.
Reported-by: Peter Eisentraut
Discussion: https://postgr.es/m/
48da4a1f-ccd9-4988-9622-
24f37b1de2b4%40eisentraut.org
Tom Lane [Sun, 30 Jun 2024 18:24:14 +0000 (14:24 -0400)]
Make pg_createsubscriber warn if publisher has two-phase commit enabled.
pg_createsubscriber currently always sets up logical replication
with two-phase commit disabled. Improving that is not going to
happen for v17. In the meantime, document the deficiency, and
adjust pg_createsubscriber so that it will emit a warning if
the source installation has max_prepared_transactions > 0.
Hayato Kuroda (some mods by Amit Kapila and me), per complaint from
Noah Misch
Discussion: https://postgr.es/m/
20240623062157[email protected]
Tom Lane [Sun, 30 Jun 2024 17:45:24 +0000 (13:45 -0400)]
Make pg_createsubscriber more wary about quoting connection parameters.
The original coding here could fail with database names, user names,
etc that contain spaces or other special characters.
As partial test coverage, extend the 040_pg_createsubscriber.pl
test script so that it uses a generated database name containing
funny characters.
Hayato Kuroda (some mods by me), per complaint from Noah Misch
Discussion: https://postgr.es/m/
20240623062157[email protected]
Noah Misch [Fri, 28 Jun 2024 18:17:50 +0000 (11:17 -0700)]
Fix .gitignore for new injection suite.
Commit
c35f419d6efbdf1a050250d84b687e6705917711 missed this.
Noah Misch [Fri, 28 Jun 2024 16:33:40 +0000 (09:33 -0700)]
Remove configuration-dependent output from new inplace-inval test.
Per buildfarm members prion and trilobite. Back-patch to v12 (all
supported versions), like commit
0844b3968985447ed0a6937cfc8639e379da2fe6.
Strategy reviewed by Tom Lane.
Discussion: https://postgr.es/m/
20240628051353[email protected]
Robert Haas [Fri, 28 Jun 2024 14:45:51 +0000 (10:45 -0400)]
pgindent, because I forgot to do that.
Commit
065583cf460f980a182498941ac52810f709a897 should have
included these changes.
Amit Langote [Fri, 28 Jun 2024 12:58:13 +0000 (21:58 +0900)]
SQL/JSON: Always coerce JsonExpr result at runtime
Instead of looking up casts at parse time for converting the result
of JsonPath* query functions to the specified or the default
RETURNING type, always perform the conversion at runtime using either
the target type's input function or the function
json_populate_type().
There are two motivations for this change:
1. json_populate_type() coerces to types with typmod such that any
string values that exceed length limit cause an error instead of
silent truncation, which is necessary to be standard-conforming.
2. It was possible to end up with a cast expression that doesn't
support soft handling of errors causing bugs in the of handling
ON ERROR clause.
JsonExpr.coercion_expr which would store the cast expression is no
longer necessary, so remove.
Bump catversion because stored rules change because of the above
removal.
Reported-by: Alvaro Herrera <[email protected]>
Reviewed-by: Jian He <[email protected]>
Discussion: Discussion: https://postgr.es/m/
202405271326.5a5rprki64aw%40alvherre.pgsql
Amit Langote [Fri, 28 Jun 2024 12:37:14 +0000 (21:37 +0900)]
SQL/JSON: Fix coercion of constructor outputs to types with typmod
Ensure SQL/JSON constructor functions that allow specifying the
target type using the RETURNING clause perform implicit cast to
that type. This ensures that output values that exceed the specified
length produce an error rather than being silently truncated. This
behavior conforms to the SQL standard.
Reported-by: Alvaro Herrera <[email protected]>
Reviewed-by: Jian He <[email protected]>
Discussion: https://postgr.es/m/
202405271326.5a5rprki64aw%40alvherre.pgsql
Robert Haas [Tue, 25 Jun 2024 19:42:36 +0000 (15:42 -0400)]
Prevent summarizer hang when summarize_wal turned off and back on.
Before this commit, when the WAL summarizer started up or recovered
from an error, it would resume summarization from wherever it left
off. That was OK normally, but wrong if summarize_wal=off had been
turned off temporary, allowing some WAL to be removed, and then turned
back on again. In such cases, the WAL summarizer would simply hang
forever. This commit changes the reinitialization sequence for WAL
summarizer to rederive the starting position in the way we were
already doing at initial startup, fixing the problem.
Per report from Israel Barth Rubio. Reviewed by Tom Lane.
Discussion: http://postgr.es/m/CA+TgmoYN6x=YS+FoFOS6=nr6=qkXZFWhdiL7k0oatGwug2hcuA@mail.gmail.com
Amit Langote [Fri, 28 Jun 2024 04:59:57 +0000 (13:59 +0900)]
SQL/JSON: Validate values in ON ERROR/EMPTY clauses
Currently, the grammar allows any supported values in the ON ERROR
and ON EMPTY clauses for SQL/JSON functions, regardless of whether
the values are appropriate for the function. This commit ensures
that during parse analysis, the provided value is checked for
validity for the given function and throws a syntax error if it is
not.
While at it, this fixes some omissions in the documentation of the
ON ERROR/EMPTY clauses for JSON_TABLE().
Reported-by: Jian He <[email protected]>
Reviewed-by: Jian He <[email protected]>
Discussion: https://postgr.es/m/CACJufxFgWGqpESSYzyJ6tSurr3vFYBSNEmCfkGyB_dMdptFnZQ%40mail.gmail.com
Amit Langote [Fri, 28 Jun 2024 04:59:13 +0000 (13:59 +0900)]
SQL/JSON: Prevent ON EMPTY for EXISTS columns in JSON_TABLE()
Due to an oversight in
de3600452b61, the ON EMPTY clause was
incorrectly allowed in the EXISTS column. Fix the grammar to prevent
this.
Discussion: https://postgr.es/m/CA%2BHiwqHh3YDXTpccgAo4CdfV9Mhy%2Bmg%3Doh6t8rfM5uLW1BJN4g%40mail.gmail.com
Michael Paquier [Fri, 28 Jun 2024 04:41:39 +0000 (13:41 +0900)]
Update modules/injection_points/.gitignore
Thinko in
c35f419d6efb, where an isolation test has been added to the
module.
Michael Paquier [Fri, 28 Jun 2024 04:30:47 +0000 (13:30 +0900)]
Fix comments in heaptuple.c
Since
e27f4ee0a701, fastgetattr() and heap_getattr() are not macros, but
inlined functions.
Author: Junwang Zhao
Reviewed-by: Stepan Neretin
Discussion: https://postgr.es/m/CAEG8a3JS-JKWWyOcM7BU=vPqFXa3W7mZSHnvc3CBqx=tC+3SCA@mail.gmail.com
Michael Paquier [Fri, 28 Jun 2024 03:31:29 +0000 (12:31 +0900)]
Improve locking around InjectionPointRun()
As coded, an injection point could be loaded into the local cache
without the LWLock InjectionPointLock taken, hence a point detached and
re-attached concurrently of a point running calling InjectionPointRun()
may finish by loading a callback it did no set initially. Based on all
the cases discussed until now on the lists, it is fine to delay the lock
release until the callback is run, so let's do that.
While on it, remove a useless LWLockRelease() called before an error in
InjectionPointAttach().
Per discussion with Heikki Linnakangas and Noah Misch.
Discussion: https://postgr.es/m/
e1ffb822-054e-4006-ac06-
50532767f75b@iki.fi
Noah Misch [Fri, 28 Jun 2024 02:21:06 +0000 (19:21 -0700)]
Remove comment about xl_heap_inplace "AT END OF STRUCT".
Commit
2c03216d831160bedd72d45f712601b6f7d03f1c moved the tuple data
from there to the buffer-0 data. Back-patch to v12 (all supported
versions), the plan for the next change to this struct.
Discussion: https://postgr.es/m/
20240523000548[email protected]
Noah Misch [Fri, 28 Jun 2024 02:21:06 +0000 (19:21 -0700)]
Cope with inplace update making catcache stale during TOAST fetch.
This extends
ad98fb14226ae6456fbaed7990ee7591cbe5efd2 to invals of
inplace updates. Trouble requires an inplace update of a catalog having
a TOAST table, so only pg_database was at risk. (The other catalog on
which core code performs inplace updates, pg_class, has no TOAST table.)
Trouble would require something like the inplace-inval.spec test.
Consider GRANT ... ON DATABASE fetching a stale row from cache and
discarding a datfrozenxid update that vac_truncate_clog() has already
relied upon. Back-patch to v12 (all supported versions).
Reviewed (in an earlier version) by Robert Haas.
Discussion: https://postgr.es/m/
20240114201411[email protected]
Discussion: https://postgr.es/m/
20240512232923[email protected]
Noah Misch [Fri, 28 Jun 2024 02:21:05 +0000 (19:21 -0700)]
AccessExclusiveLock new relations just after assigning the OID.
This has no user-visible, important consequences, since other sessions'
catalog scans can't find the relation until we commit. However, this
unblocks introducing a rule about locks required to heap_update() a
pg_class row. CREATE TABLE has been acquiring this lock eventually, but
it can heap_update() pg_class.relchecks earlier. create_toast_table()
has been acquiring only ShareLock. Back-patch to v12 (all supported
versions), the plan for the commit relying on the new rule.
Reviewed (in an earlier version) by Robert Haas.
Discussion: https://postgr.es/m/
20240611024525[email protected]
Noah Misch [Fri, 28 Jun 2024 02:21:05 +0000 (19:21 -0700)]
Lock before setting relhassubclass on RELKIND_PARTITIONED_INDEX.
Commit
5b562644fec696977df4a82790064e8287927891 added a comment that
SetRelationHasSubclass() callers must hold this lock. When commit
17f206fbc824d2b4b14480199ca9ff7dea417eda extended use of this column to
partitioned indexes, it didn't take the lock. As the latter commit
message mentioned, we currently never reset a partitioned index to
relhassubclass=f. That largely avoids harm from the lock omission. The
cause for fixing this now is to unblock introducing a rule about locks
required to heap_update() a pg_class row. This might cause more
deadlocks. It gives minor user-visible benefits:
- If an ALTER INDEX SET TABLESPACE runs concurrently with ALTER TABLE
ATTACH PARTITION or CREATE PARTITION OF, one transaction blocks
instead of failing with "tuple concurrently updated". (Many cases of
DDL concurrency still fail that way.)
- Match ALTER INDEX ATTACH PARTITION in choosing to lock the index.
While not user-visible today, we'll need this if we ever make something
set the flag to false for a partitioned index, like ANALYZE does today
for tables. Back-patch to v12 (all supported versions), the plan for
the commit relying on the new rule. In back branches, add
LockOrStrongerHeldByMe() instead of adding a LockHeldByMe() parameter.
Reviewed (in an earlier version) by Robert Haas.
Discussion: https://postgr.es/m/
20240611024525[email protected]
Noah Misch [Fri, 28 Jun 2024 02:21:05 +0000 (19:21 -0700)]
Lock owned sequences during ALTER TABLE SET { LOGGED | UNLOGGED }.
These commands already make the persistence of owned sequences follow
owned table persistence changes. They didn't lock those sequences.
They lost the effect of nextval() calls that other sessions make after
the ALTER TABLE command, before the ALTER TABLE transaction commits.
Fix by acquiring the same lock that ALTER SEQUENCE SET { LOGGED |
UNLOGGED } acquires. This might cause more deadlocks. Back-patch to
v15, where commit
344d62fb9a978a72cf8347f0369b9ee643fd0b31 introduced
unlogged sequences.
Reviewed (in an earlier version) by Robert Haas.
Discussion: https://postgr.es/m/
20240611024525[email protected]
Noah Misch [Fri, 28 Jun 2024 02:21:05 +0000 (19:21 -0700)]
Expand comments and add an assertion in nodeModifyTable.c.
Most comments concern RELKIND_VIEW. One addresses the ExecUpdate()
"tupleid" parameter. A later commit will rely on these facts, but they
hold already. Back-patch to v12 (all supported versions), the plan for
that commit.
Reviewed (in an earlier version) by Robert Haas.
Discussion: https://postgr.es/m/
20240512232923[email protected]
Noah Misch [Fri, 28 Jun 2024 02:21:05 +0000 (19:21 -0700)]
Add an injection_points isolation test suite.
Make the isolation harness recognize injection_points wait events as a
type of blocked state. Test an extant inplace-update bug.
Reviewed by Robert Haas and Michael Paquier.
Discussion: https://postgr.es/m/
20240512232923[email protected]
Noah Misch [Fri, 28 Jun 2024 02:21:05 +0000 (19:21 -0700)]
Create waitfuncs.c for pg_isolation_test_session_is_blocked().
The next commit makes the function inspect an additional non-lock
contention source, so it no longer fits in lockfuncs.c.
Reviewed by Robert Haas.
Discussion: https://postgr.es/m/
20240512232923[email protected]
Noah Misch [Fri, 28 Jun 2024 02:21:05 +0000 (19:21 -0700)]
Add wait event type "InjectionPoint", a custom type like "Extension".
Both injection points and customization of type "Extension" are new in
v17, so this just changes a detail of an unreleased feature.
Reported by Robert Haas. Reviewed by Michael Paquier.
Discussion: https://postgr.es/m/CA+TgmobfMU5pdXP36D5iAwxV5WKE_vuDLtp_1QyH+H5jMMt21g@mail.gmail.com
Noah Misch [Fri, 28 Jun 2024 02:21:05 +0000 (19:21 -0700)]
Improve test coverage for changes to inplace-updated catalogs.
This covers both regular and inplace changes, since bugs arise at their
intersection. Where marked, these witness extant bugs. Back-patch to
v12 (all supported versions).
Reviewed (in an earlier version) by Robert Haas.
Discussion: https://postgr.es/m/
20240512232923[email protected]
Noah Misch [Fri, 28 Jun 2024 02:21:04 +0000 (19:21 -0700)]
Make TAP todo_start effects the same under Meson and prove_check.
This could have caused spurious failures only on SPARC Linux, because
today's only todo_start tests for that platform. Back-patch to v16,
where Meson support first appeared.
Reviewed by Robert Haas.
Discussion: https://postgr.es/m/
20240512232923[email protected]
Amit Langote [Fri, 28 Jun 2024 00:42:13 +0000 (09:42 +0900)]
SQL/JSON: Document behavior when input document is not jsonb
The input document to functions JSON_EXISTS(), JSON_QUERY(),
JSON_VALUE(), and JSON_TABLE() can be specified as character or
UTF8-encoded bytea strings. These are automatically converted to
jsonb with an implicit cast before being passed to the jsonpath
machinery.
In the current implementation, errors that occur when parsing the
specified string into a valid JSON document are thrown
unconditionally. This means they are not subject to the explicit or
implicit ON ERROR clause of those functions, which is a standard-
conforming behavior. Add a note to the documentation to mention
that.
Reported-by: Markus Winand
Discussion: https://postgr.es/m/
F7DD1442-265C-4220-A603-
CB0DEB77E91D%40winand.at
Tom Lane [Thu, 27 Jun 2024 18:43:59 +0000 (14:43 -0400)]
Avoid crashing when a JIT-inlined backend function throws an error.
errfinish() assumes that the __FUNC__ and __FILE__ arguments it's
passed are compile-time constant strings that can just be pointed
to rather than physically copied. However, it's possible for LLVM
to generate code in which those pointers point into a dynamically
loaded code segment. If that segment gets unloaded before we're
done with the ErrorData struct, we have dangling pointers that
will lead to SIGSEGV. In simple cases that won't happen, because we
won't unload LLVM code before end of transaction. But it's possible
to happen if the error is thrown within end-of-transaction code run by
_SPI_commit or _SPI_rollback, because since commit
2e517818f those
functions clean up by ending the transaction and starting a new one.
Rather than fixing this by adding pstrdup() overhead to every
elog/ereport sequence, let's fix it by copying the risky pointers
in CopyErrorData(). That solves it for _SPI_commit/_SPI_rollback
because they use that function to preserve the error data across
the transaction end/restart sequence; and it seems likely that
any other code doing something similar would need to do that too.
I'm suspicious that this behavior amounts to an LLVM bug (or a
bug in our use of it?), because it implies that string constant
references that should be pointer-equal according to a naive
understanding of C semantics will sometimes not be equal.
However, even if it is a bug and someday gets fixed, we'll have
to cope with the current behavior for a long time to come.
Report and patch by me. Back-patch to all supported branches.
Discussion: https://postgr.es/m/
1565654.
1719425368@sss.pgh.pa.us
Heikki Linnakangas [Thu, 27 Jun 2024 18:06:32 +0000 (21:06 +0300)]
Fix MVCC bug with prepared xact with subxacts on standby
We did not recover the subtransaction IDs of prepared transactions
when starting a hot standby from a shutdown checkpoint. As a result,
such subtransactions were considered as aborted, rather than
in-progress. That would lead to hint bits being set incorrectly, and
the subtransactions suddenly becoming visible to old snapshots when
the prepared transaction was committed.
To fix, update pg_subtrans with prepared transactions's subxids when
starting hot standby from a shutdown checkpoint. The snapshots taken
from that state need to be marked as "suboverflowed", so that we also
check the pg_subtrans.
Backport to all supported versions.
Discussion: https://www.postgresql.org/message-id/
6b852e98-2d49-4ca1-9e95-
db419a2696e0@iki.fi
Heikki Linnakangas [Thu, 27 Jun 2024 18:06:27 +0000 (21:06 +0300)]
tests: Trim newline from result returned by BackgroundPsql->query
This went unnoticed, because only a few existing callers of
BackgroundPsql->query used the result, and the ones that did were not
bothered by an extra newline. I noticed because I was about to add a
new test that checks the result.
Backport to all supported versions, since I just backported the
BackgroundPsql facility to all supported versions too.
Alvaro Herrera [Thu, 27 Jun 2024 17:51:47 +0000 (19:51 +0200)]
Fix thinkos in comments
The first one was noticed by Tender Wang and introduced with
8aba9322511f; the other one was newly introduced with
dbca3469ebf8.
Amit Kapila [Thu, 27 Jun 2024 06:05:00 +0000 (11:35 +0530)]
Drop the temporary tuple slots allocated by pgoutput.
In pgoutput, when converting the child table's tuple format to match the
parent table's, we temporarily create a new slot to store the converted
tuple. However, we missed to drop such temporary slots, leading to
resource leakage.
Reported-by: Bowen Shi
Author: Hou Zhijie
Reviewed-by: Amit Kapila
Backpatch-through: 15
Discussion: https://postgr.es/m/CAM_vCudv8dc3sjWiPkXx5F2b27UV7_YRKRbtSCcE-pv=cVACGA@mail.gmail.com
Michael Paquier [Thu, 27 Jun 2024 00:44:47 +0000 (09:44 +0900)]
Fix overflow with pgstats DSA reference count
When pgstats is initialized for a backend, it uses dsa_attach_in_place()
without a "segment" provided. Hence, no callback is registered to
automatically release the DSA attached once a backend exits. Not doing
any cleanup causes the reference count of the pgstats DSA to
continuously increment, at some point overflowing it (the more the
number of connections, the faster it is to reach this state). Once the
reference count overflows and then gets back to 0, new backends are not
able to attach to the pgstats DSA, failing startup.
This issue is resolved by adding in the pgstats shutdown hook a call to
dsa_release_in_place(), ensuring that the DSA attached at backend
startup is correctly released, keeping the reference count at bay.
The author of this patch has been able to see this issue on a server
with a long uptime and a high connection turnover.
Issue introduced by
5891c7a8ed8f, so backpatch down to 15.
Author: Anthonin Bonnefoy
Discussion: https://postgr.es/m/CAO6_XqqJbJBL=M7Ym13TcB4Xnq58vRa2jcC+gwEPBgbAda6B1Q@mail.gmail.com
Backpatch-through: 15
Heikki Linnakangas [Fri, 21 Jun 2024 15:31:15 +0000 (18:31 +0300)]
Fix bugs in MultiXact truncation
1. TruncateMultiXact() performs the SLRU truncations in a critical
section. Deleting the SLRU segments calls ForwardSyncRequest(), which
will try to compact the request queue if it's full
(CompactCheckpointerRequestQueue()). That in turn allocates memory,
which is not allowed in a critical section. Backtrace:
TRAP: failed Assert("CritSectionCount == 0 || (context)->allowInCritSection"), File: "../src/backend/utils/mmgr/mcxt.c", Line: 1353, PID: 920981
postgres: autovacuum worker template0(ExceptionalCondition+0x6e)[0x560a501e866e]
postgres: autovacuum worker template0(+0x5dce3d)[0x560a50217e3d]
postgres: autovacuum worker template0(ForwardSyncRequest+0x8e)[0x560a4ffec95e]
postgres: autovacuum worker template0(RegisterSyncRequest+0x2b)[0x560a50091eeb]
postgres: autovacuum worker template0(+0x187b0a)[0x560a4fdc2b0a]
postgres: autovacuum worker template0(SlruDeleteSegment+0x101)[0x560a4fdc2ab1]
postgres: autovacuum worker template0(TruncateMultiXact+0x2fb)[0x560a4fdbde1b]
postgres: autovacuum worker template0(vac_update_datfrozenxid+0x4b3)[0x560a4febd2f3]
postgres: autovacuum worker template0(+0x3adf66)[0x560a4ffe8f66]
postgres: autovacuum worker template0(AutoVacWorkerMain+0x3ed)[0x560a4ffe7c2d]
postgres: autovacuum worker template0(+0x3b1ead)[0x560a4ffecead]
postgres: autovacuum worker template0(+0x3b620e)[0x560a4fff120e]
postgres: autovacuum worker template0(+0x3b3fbb)[0x560a4ffeefbb]
postgres: autovacuum worker template0(+0x2f724e)[0x560a4ff3224e]
/lib/x86_64-linux-gnu/libc.so.6(+0x27c8a)[0x7f62cc642c8a]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x85)[0x7f62cc642d45]
postgres: autovacuum worker template0(_start+0x21)[0x560a4fd16f31]
To fix, bail out in CompactCheckpointerRequestQueue() without doing
anything, if it's called in a critical section. That covers the above
call path, as well as any other similar cases where
RegisterSyncRequest might be called in a critical section.
2. After fixing that, another problem became apparent: Autovacuum
process doing that truncation can deadlock with the checkpointer
process. TruncateMultiXact() sets "MyProc->delayChkptFlags |=
DELAY_CHKPT_START". If the sync request queue is full and cannot be
compacted, the process will repeatedly sleep and retry, until there is
room in the queue. However, if the checkpointer is trying to start a
checkpoint at the same time, and is waiting for the DELAY_CHKPT_START
processes to finish, the queue will never shrink.
More concretely, the autovacuum process is stuck here:
#0 0x00007fc934926dc3 in epoll_wait () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x000056220b24348b in WaitEventSetWaitBlock (set=0x56220c2e4b50, occurred_events=0x7ffe7856d040, nevents=1, cur_timeout=<optimized out>) at ../src/backend/storage/ipc/latch.c:1570
#2 WaitEventSetWait (set=0x56220c2e4b50, timeout=timeout@entry=10, occurred_events=<optimized out>, occurred_events@entry=0x7ffe7856d040, nevents=nevents@entry=1,
wait_event_info=wait_event_info@entry=
150994949) at ../src/backend/storage/ipc/latch.c:1516
#3 0x000056220b243224 in WaitLatch (latch=<optimized out>, latch@entry=0x0, wakeEvents=wakeEvents@entry=40, timeout=timeout@entry=10, wait_event_info=wait_event_info@entry=
150994949)
at ../src/backend/storage/ipc/latch.c:538
#4 0x000056220b26cf46 in RegisterSyncRequest (ftag=ftag@entry=0x7ffe7856d0a0, type=type@entry=SYNC_FORGET_REQUEST, retryOnError=true) at ../src/backend/storage/sync/sync.c:614
#5 0x000056220af9db0a in SlruInternalDeleteSegment (ctl=ctl@entry=0x56220b7beb60 <MultiXactMemberCtlData>, segno=segno@entry=11350) at ../src/backend/access/transam/slru.c:1495
#6 0x000056220af9dab1 in SlruDeleteSegment (ctl=ctl@entry=0x56220b7beb60 <MultiXactMemberCtlData>, segno=segno@entry=11350) at ../src/backend/access/transam/slru.c:1566
#7 0x000056220af98e1b in PerformMembersTruncation (oldestOffset=<optimized out>, newOldestOffset=<optimized out>) at ../src/backend/access/transam/multixact.c:3006
#8 TruncateMultiXact (newOldestMulti=newOldestMulti@entry=
3221225472, newOldestMultiDB=newOldestMultiDB@entry=4) at ../src/backend/access/transam/multixact.c:3201
#9 0x000056220b098303 in vac_truncate_clog (frozenXID=749, minMulti=<optimized out>, lastSaneFrozenXid=749, lastSaneMinMulti=
3221225472) at ../src/backend/commands/vacuum.c:1917
#10 vac_update_datfrozenxid () at ../src/backend/commands/vacuum.c:1760
#11 0x000056220b1c3f76 in do_autovacuum () at ../src/backend/postmaster/autovacuum.c:2550
#12 0x000056220b1c2c3d in AutoVacWorkerMain (startup_data=<optimized out>, startup_data_len=<optimized out>) at ../src/backend/postmaster/autovacuum.c:1569
and the checkpointer is stuck here:
#0 0x00007fc9348ebf93 in clock_nanosleep () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007fc9348fe353 in nanosleep () from /lib/x86_64-linux-gnu/libc.so.6
#2 0x000056220b40ecb4 in pg_usleep (microsec=microsec@entry=10000) at ../src/port/pgsleep.c:50
#3 0x000056220afb43c3 in CreateCheckPoint (flags=flags@entry=108) at ../src/backend/access/transam/xlog.c:7098
#4 0x000056220b1c6e86 in CheckpointerMain (startup_data=<optimized out>, startup_data_len=<optimized out>) at ../src/backend/postmaster/checkpointer.c:464
To fix, add AbsorbSyncRequests() to the loops where the checkpointer
waits for DELAY_CHKPT_START or DELAY_CHKPT_COMPLETE operations to
finish.
Backpatch to v14. Before that, SLRU deletion didn't call
RegisterSyncRequest, which avoided this failure. I'm not sure if there
are other similar scenarios on older versions, but we haven't had
any such reports.
Discussion: https://www.postgresql.org/message-id/
ccc66933-31c1-4f6a-bf4b-
45fef0d4f22e@iki.fi
Bruce Momjian [Wed, 26 Jun 2024 19:08:06 +0000 (15:08 -0400)]
doc PG 17 relnotes: fix system catalog name mistake
Reported-by: David G. Johnston
Discussion: https://postgr.es/m/CAKFQuwYgkaOuao4DXuQwhbg+vyu4Xb5TGpuDNDOfMa0AftyweQ@mail.gmail.com
Backpatch-through: master
Bruce Momjian [Wed, 26 Jun 2024 17:13:46 +0000 (13:13 -0400)]
doc PG 17 relnotes: add item about pg_collation column renames
Reported-by: David G. Johnston
Discussion: https://postgr.es/m/CAKFQuwYRw30QaWrSsL57k3L_=zdQ4JTgY9pGnnhm42B7fGJX1A@mail.gmail.com
Backpatch-through: master
Nathan Bossart [Wed, 26 Jun 2024 16:25:38 +0000 (11:25 -0500)]
Use PqMsg_* macros in fe-auth.c.
Commit
f4b54e1ed9, which introduced macros for protocol characters,
missed updating a few places in fe-auth.c.
Author: Jelte Fennema-Nio
Discussion: https://postgr.es/m/CAGECzQSoPHtZ4xe0raJ6FYSEiPPS%2BYWXBhOGo%2BY1YecLgknF3g%40mail.gmail.com
Peter Geoghegan [Wed, 26 Jun 2024 14:45:52 +0000 (10:45 -0400)]
Fix nbtree array unsatisfied inequality check.
_bt_advance_array_keys didn't take sufficient care at the point where it
decides whether to start a new primitive index scan based on a call to
_bt_check_compare against finaltup (a call with the scan direction
flipped around). The final decision was conditioned on rules about how
the scan key offset sktrig that initially triggered array advancement
(passed to _bt_advance_array_keys from its _bt_checkkeys caller)
compared to the offset set by its own _bt_check_compare finaltup call.
This approach was faulty, in that it allowed _bt_advance_array_keys to
incorrectly start a new primitive index scan, that landed on the same
leaf page (on assert-enabled builds it led to an assertion failure).
In general, scans with array keys are expected to never have to read the
same leaf page more than once (barring cases involving cursors, and
cases where the scan restores a marked position for the inner side of a
merge join). This principle was established by commit
5bf748b8.
To fix, make the final decision based on whether the scan key offset set
by the _bt_check_compare finaltup call is an offset to an inequality
strategy scan key. An unsatisfied required inequality strategy scan key
indicates that all of the scan's required equality strategy scan keys
must also be satisfied by finaltup (not just by caller's tuple), and
that there is a decent chance that _bt_first will be able to reposition
the scan to a position many leaf pages ahead of the current leaf page.
Oversight in commit
5bf748b8.
Discussion: https://postgr.es/m/CAH2-Wz=DyHbcg7o6zXqzyiin8WE8vzk4tvU8Lrnh-a=EAvO0TQ@mail.gmail.com
Alvaro Herrera [Wed, 26 Jun 2024 11:40:26 +0000 (13:40 +0200)]
Fix partition pruning setup during DETACH CONCURRENTLY
When detaching partition in concurrent mode, it's possible for partition
descriptors to not match the set that was recently seen when the plan
was made, causing an assertion failure or (in production builds) failure
to construct a working plan. The case that was reported involves
prepared statements, but I think it may be possible to hit this bug
without that too.
The problem is that CreatePartitionPruneState is constructing a
PartitionPruneState under the assumption that new partitions can be
added, but never removed, but it turns out that this isn't true: a
prepared statement gets replanned when the DETACH CONCURRENTLY session
sends out its invalidation message, but if the invalidation message
arrives after ExecInitAppend started, we would build a partition
descriptor without the partition, and then CreatePartitionPruneState
would refuse to work with it.
CreatePartitionPruneState already contains code to deal with the new
descriptor having more partitions than before (and behaving for the
extra partitions as if they had been pruned), but doesn't have code to
deal with less partitions than before, and it is naïve about the case
where the number of partitions is the same. We could simply add that a
new stanza for less partitions than before, and in simple testing it
works to do that; but it's possible to press the test scripts even
further and hit the case where one partition is added and a partition is
removed quickly enough that we see the same number of partitions, but
they don't actually match, causing hangs during execution.
To cope with both these problems, we now memcmp() the arrays of
partition OIDs, and do a more elaborate mapping (relying on the fact
that both OID arrays are in partition-bounds order) if they're not
identical.
This fix was already pushed in backbranches earlier.
Reported-by: yajun Hu <[email protected]>
Reviewed-by: Tender Wang <[email protected]>
Discussion: https://postgr.es/m/18377-
e0324601cfebdfe5@postgresql.org
Tom Lane [Tue, 25 Jun 2024 21:53:41 +0000 (17:53 -0400)]
Improve comment in gram.y.
"As so-and-so" isn't bad English, but it has a faintly archaic
whiff to it, and confuses some non-native speakers. Write
"Like so-and-so" instead.
Per complaint from Tatsuo Ishii.
Discussion: https://postgr.es/m/
20240623.130154.
1867056921698616251[email protected]
Joe Conway [Mon, 24 Jun 2024 21:24:14 +0000 (17:24 -0400)]
Stamp 17beta2.
Alvaro Herrera [Mon, 24 Jun 2024 15:20:21 +0000 (17:20 +0200)]
Revert "Fix partition pruning setup during DETACH CONCURRENTLY"
This reverts commit
27162a64b386; this branch is in code freeze due to a
nearing release. We can commit again after the release is out.
Discussion: https://postgr.es/m/
1158256.
1719239648@sss.pgh.pa.us
Alvaro Herrera [Mon, 24 Jun 2024 13:56:32 +0000 (15:56 +0200)]
Fix partition pruning setup during DETACH CONCURRENTLY
When detaching partition in concurrent mode, it's possible for partition
descriptors to not match the set that was recently seen when the plan
was made, causing an assertion failure or (in production builds) failure
to construct a working plan. The case that was reported involves
prepared statements, but I think it may be possible to hit this bug
without that too.
The problem is that CreatePartitionPruneState is constructing a
PartitionPruneState under the assumption that new partitions can be
added, but never removed, but it turns out that this isn't true: a
prepared statement gets replanned when the DETACH CONCURRENTLY session
sends out its invalidation message, but if the invalidation message
arrives after ExecInitAppend started, we would build a partition
descriptor without the partition, and then CreatePartitionPruneState
would refuse to work with it.
CreatePartitionPruneState already contains code to deal with the new
descriptor having more partitions than before (and behaving for the
extra partitions as if they had been pruned), but doesn't have code to
deal with less partitions than before, and it is naïve about the case
where the number of partitions is the same. We could simply add that a
new stanza for less partitions than before, and in simple testing it
works to do that; but it's possible to press the test scripts even
further and hit the case where one partition is added and a partition is
removed quickly enough that we see the same number of partitions, but
they don't actually match, causing hangs during execution.
To cope with both these problems, we now memcmp() the arrays of
partition OIDs, and do a more elaborate mapping (relying on the fact
that both OID arrays are in partition-bounds order) if they're not
identical.
Backpatch to 14, where DETACH CONCURRENTLY appeared.
Reported-by: yajun Hu <[email protected]>
Reviewed-by: Tender Wang <[email protected]>
Discussion: https://postgr.es/m/18377-
e0324601cfebdfe5@postgresql.org
Peter Eisentraut [Mon, 24 Jun 2024 11:11:27 +0000 (13:11 +0200)]
Translation updates
Source-Git-URL: https://git.postgresql.org/git/pgtranslation/messages.git
Source-Git-Hash:
4409d73e450606ff15b428303d706f1d15c1f597
Alexander Korotkov [Sat, 22 Jun 2024 13:13:08 +0000 (16:13 +0300)]
Remove extra comment at TableAmRoutine.scan_analyze_next_block
The extra comment was accidentally copied here by
6377e12a from
heapam_scan_analyze_next_block().
Reported-by: Matthias van de Meent
Discussion: https://postgr.es/m/CAEze2WjC5PiweG-4oe0hB_Zr59iF3tRE1gURm8w4Cg5b6JEBGw%40mail.gmail.com
Bruce Momjian [Fri, 21 Jun 2024 16:08:14 +0000 (12:08 -0400)]
doc PG 17 relnotes: wording improvements, add links, merge item
Backpatch-through: master
Heikki Linnakangas [Fri, 21 Jun 2024 14:13:10 +0000 (17:13 +0300)]
Fix relcache invalidation when relfilelocator is updated
In commit
af0e7deb4a, I removed a call to RelationCloseSmgr(), because
the dangling SMgrRelation was no longer an issue. However, we still
need the call when the relation's relfilelocator changes, so that the
new relfilelocator takes effect immediately.
Reported-by: Alexander Lakhin <[email protected]>
Discussion: https://www.postgresql.org/message-id/
987b1c8c-8c91-4847-ca0e-
879f421680ff%40gmail.com
Bruce Momjian [Fri, 21 Jun 2024 14:11:12 +0000 (10:11 -0400)]
doc PG 17 relnotes: add link to enable_group_by_reordering GUC
Backpatch-through: master
Alexander Korotkov [Fri, 21 Jun 2024 12:39:13 +0000 (15:39 +0300)]
Add doc entry for the new GUC paramenter enable_group_by_reordering
0452b461bc4 adds alternative orderings of group-by keys during the query
optimization. This new feature is controlled by the new GUC parameter
enable_group_by_reordering, which accidentally came without the documentation.
This commit adds the missing documentation for that GUC.
Reported-by: Bruce Momjian
Discussion: https://postgr.es/m/ZnDx2FYlba_OafQd%40momjian.us
Author: Andrei Lepikhov
Reviewed-by: Pavel Borisov, Alexander Korotkov
John Naylor [Fri, 21 Jun 2024 07:59:11 +0000 (14:59 +0700)]
Prevent access of uninitialized memory in radix tree nodes
RT_NODE_16_SEARCH_EQ() performs comparisions using vector registers
on x64-64 and aarch64. We apply a mask to the resulting bitfield
to eliminate irrelevant bits that may be set. This ensures correct
behavior, but Valgrind complains of the partially-uninitialised
values. So far the warnings have only occurred on aarch64, which
explains why this hasn't been seen earlier.
To fix this warning, initialize the whole fixed-sized part of the nodes
upon allocation, rather than just do the minimum initialization to
function correctly. The initialization for node48 is a bit different
in that the 256-byte slot index array must be populated with "invalid
index" rather than zero. Experimentation has shown that compilers
tend to emit code that uselessly memsets that array twice. To avoid
pessimizing this path, swap the order of the slot_idxs[] and isset[]
arrays so we can initialize with two non-overlapping memset calls.
Reported by Tomas Vondra
Analysis and patch by Tom Lane, reviewed by Masahiko Sawada. I
investigated the behavior of memset calls to overlapping regions,
leading to the above tweaks to node48 as discussed in the thread.
Discussion: https://postgr.es/m/
120c63ad-3d12-415f-a7bf-
3da451c31bf6%40enterprisedb.com
Peter Eisentraut [Fri, 21 Jun 2024 07:40:44 +0000 (09:40 +0200)]
pg_combinebackup: Error message improvements
Make the wordings of some file-related error messages more like those
used in other files.
Peter Eisentraut [Fri, 21 Jun 2024 07:29:34 +0000 (09:29 +0200)]
Remove redundant newlines from error messages
Peter Eisentraut [Fri, 21 Jun 2024 06:17:23 +0000 (08:17 +0200)]
Fix make build on MinGW
Revert a couple of the simplifications done in commit
721856ff24b
because platforms without ln -s, where LN_S='cp -pR', such as MinGW,
required the specific previous incantations.
Reported-by: Noah Misch <[email protected]>
Discussion: https://www.postgresql.org/message-id/
20240616193448[email protected]
Peter Eisentraut [Fri, 21 Jun 2024 05:50:02 +0000 (07:50 +0200)]
parse_manifest: Use const char *
This adapts the manifest parsing code to take advantage of the
const-ified jsonapi.
Reviewed-by: Andrew Dunstan <[email protected]>
Discussion: https://www.postgresql.org/message-id/flat/
f732b014-f614-4600-a437-
dba5a2c3738b%40eisentraut.org
Peter Eisentraut [Fri, 21 Jun 2024 05:50:02 +0000 (07:50 +0200)]
jsonapi: Use const char *
Apply const qualifiers to char * arguments and fields throughout the
jsonapi. This allows the top-level APIs such as
pg_parse_json_incremental() to declare their input argument as const.
It also reduces the number of unconstify() calls.
Reviewed-by: Andrew Dunstan <[email protected]>
Discussion: https://www.postgresql.org/message-id/flat/
f732b014-f614-4600-a437-
dba5a2c3738b%40eisentraut.org
Peter Eisentraut [Fri, 21 Jun 2024 05:50:02 +0000 (07:50 +0200)]
jsonapi: Use size_t
Use size_t instead of int for object sizes in the jsonapi. This makes
the API better self-documenting.
Reviewed-by: Andrew Dunstan <[email protected]>
Discussion: https://www.postgresql.org/message-id/flat/
f732b014-f614-4600-a437-
dba5a2c3738b%40eisentraut.org
Amit Kapila [Fri, 21 Jun 2024 04:25:25 +0000 (09:55 +0530)]
Doc: Generated columns are skipped for logical replication.
Add a note in docs that generated columns are skipped for logical
replication.
Author: Peter Smith
Reviewed-by: Peter Eisentraut
Backpatch-through: 12
Discussion: https://postgr.es/m/CAHut+PuXb1GLQztQkoWzYjSwkAZZ0dgCJaAHyJtZF3kmtcL=kA@mail.gmail.com
Bruce Momjian [Thu, 20 Jun 2024 23:53:01 +0000 (19:53 -0400)]
doc PG 17 relnotes: remove mention of undocumented GUC
GUC is trace_connection_negotiation. If it is undocumented, we should
not mention it in the release notes.
Backpatch-through: master
Tom Lane [Thu, 20 Jun 2024 18:21:36 +0000 (14:21 -0400)]
Don't throw an error if a queued AFTER trigger no longer exists.
afterTriggerInvokeEvents and AfterTriggerExecute have always
treated it as an error if the trigger OID mentioned in a queued
after-trigger event can't be found. However, that fails to
account for the edge case where the trigger's been dropped in
the current transaction since queueing the event. There seems
no very good reason to disallow that case, so instead silently
do nothing if the trigger OID can't be found.
This does give up a little bit of bug-detection ability, but I don't
recall that these error messages have ever actually revealed a bug,
so it seems mostly theoretical. Alternatives such as marking
pending events DONE at the time of dropping a trigger would be
complicated and perhaps introduce bugs of their own.
Per bug #18517 from Alexander Lakhin. Back-patch to all
supported branches.
Discussion: https://postgr.es/m/18517-
af2d19882240902c@postgresql.org
Peter Eisentraut [Thu, 20 Jun 2024 09:49:01 +0000 (11:49 +0200)]
pg_combinebackup: Fix small mistake in --help output
It was not showing that the --output option takes an argument.
Peter Eisentraut [Thu, 20 Jun 2024 09:42:40 +0000 (11:42 +0200)]
pg_createsubscriber: Indent --help output correctly
It was using 1 space indent instead of the 2 spaces used everywhere
else.
Peter Eisentraut [Thu, 20 Jun 2024 09:36:38 +0000 (11:36 +0200)]
pg_dump: Fix weird error message composition
The previous way could make it look like "stdin" was the actual input
file name. Write it as two separate messages instead.
Peter Eisentraut [Thu, 20 Jun 2024 09:17:21 +0000 (11:17 +0200)]
Fix redundancy in error messages
pg_log_error() already prints the program name, so we don't need to
print it again inside the message.
Peter Eisentraut [Thu, 20 Jun 2024 09:10:26 +0000 (11:10 +0200)]
Unify some error messages
Peter Eisentraut [Thu, 20 Jun 2024 06:09:28 +0000 (08:09 +0200)]
meson: Fix import library name in Windows
This changes the import library name from 'postgres.exe.lib' to
'postgres.lib', which is what it was with the old MSVC build system.
Extension builds use that name.
Bug: #18513
Reported-by: Muralikrishna Bandaru <[email protected]>
Nathan Bossart [Wed, 19 Jun 2024 21:12:18 +0000 (16:12 -0500)]
Fix comment in pg_upgrade.h.
Contrary to what the comment for the "check" struct member claims,
'pg_upgrade --check' performs only the checks and does not ask the
user for permission to make changes.
Reviewed-by: Daniel Gustafsson
Discussion: https://postgr.es/m/ZnHk7ci5IuTWVc_c%40nathan
Amit Langote [Wed, 19 Jun 2024 06:22:59 +0000 (15:22 +0900)]
SQL/JSON: Correctly enforce the default ON EMPTY behavior
Currently, when the ON EMPTY clause is not present, the ON ERROR
clause (implicit or explicit) dictates the behavior when jsonpath
evaluation in ExecEvalJsonExprPath() results in an empty sequence.
That is an oversight in the commit
6185c9737c.
This commit fixes things so that a NULL is returned instead in that
case which is the default behavior when the ON EMPTY clause is not
present.
Reported-by: Markus Winand
Discussion: https://postgr.es/m/
F7DD1442-265C-4220-A603-
CB0DEB77E91D%40winand.at
Amit Langote [Wed, 19 Jun 2024 06:22:06 +0000 (15:22 +0900)]
SQL/JSON: Correct jsonpath variable name matching
Previously, GetJsonPathVar() allowed a jsonpath expression to
reference any prefix of a PASSING variable's name. For example, the
following query would incorrectly work:
SELECT JSON_QUERY(context_item, jsonpath '$xy' PASSING val AS xyz);
The fix ensures that the length of the variable name mentioned in a
jsonpath expression matches exactly with the name of the PASSING
variable before comparing the strings using strncmp().
Reported-by: Alvaro Herrera (off-list)
Discussion: https://postgr.es/m/CA+HiwqFGkLWMvELBH6E4SQ45qUHthgcRH6gCJL20OsYDRtFx_w@mail.gmail.com
Bruce Momjian [Wed, 19 Jun 2024 02:41:49 +0000 (22:41 -0400)]
doc PG 17 relnotes: properly wrap SGML text
Backpatch-through: master
Bruce Momjian [Wed, 19 Jun 2024 02:09:41 +0000 (22:09 -0400)]
doc PG 17 relnotes: add links to documentation sections
Also slightly improve markup instructions. Indentation is still needed.
Backpatch-through: master
David Rowley [Tue, 18 Jun 2024 22:20:24 +0000 (10:20 +1200)]
Fix possible Assert failure in cost_memoize_rescan
In cost_memoize_rescan(), when calculating the hit_ratio using the calls
and ndistinct estimations, if the value that was set in
MemoizePath.calls had not been processed through clamp_row_est(), then it
was possible that it was set to some non-integer value which could result
in ndistinct being 1 higher than calls due to estimate_num_groups()
performing clamp_row_est() on its input_rows. This could result in
hit_ratio values slightly below 0.0, which would cause an Assert failure.
The value of MemoizePath.calls comes from the final parameter in the
create_memoize_path() function, of which we only have one true caller of.
That caller passes outer_path->rows. All the core code I looked at
always seems to call clamp_row_est() on the Path.rows, so there might
have been no issues with any core Paths causing troubles here. The bug
report was about a CustomPath with a non-clamped row estimated.
The misbehavior as a result of this seems to be mostly limited to the
Assert() failing. Aside from that, it seems the Memoize costs would
just come out slightly higher than they should have, which is likely
fairly harmless.
Reported-by: Kohei KaiGai <[email protected]>
Discussion: https://postgr.es/m/CAOP8fzZnTU+N64UYJYogb1hN-5hFP+PwTb3m_cnGAD7EsQwrKw@mail.gmail.com
Reviewed-by: Richard Guo
Backpatch-through: 14, where Memoize was introduced
Peter Eisentraut [Tue, 18 Jun 2024 12:53:11 +0000 (14:53 +0200)]
Fix incorrect punctuation in error message
Michael Paquier [Tue, 18 Jun 2024 03:51:36 +0000 (12:51 +0900)]
Fix typo in 029_stats_restart.pl
Oversight in
16acf7f1aaea, where the test has been introduced. Issue
noticed while scanning this area of the tree.
Bruce Momjian [Mon, 17 Jun 2024 19:05:05 +0000 (15:05 -0400)]
doc PG 17 relnotes: update to current
Backpatch-through: master
Andres Freund [Mon, 17 Jun 2024 18:53:07 +0000 (11:53 -0700)]
doc PG 17 relnotes: Fix sslnegotation typo
I was confused with copy-pasting the parameter name didn't work...
Tom Lane [Mon, 17 Jun 2024 18:30:59 +0000 (14:30 -0400)]
Fix insertion of SP-GiST REDIRECT tuples during REINDEX CONCURRENTLY.
Reconstruction of an SP-GiST index by REINDEX CONCURRENTLY may
insert some REDIRECT tuples. This will typically happen in
a transaction that lacks an XID, which leads either to assertion
failure in spgFormDeadTuple or to insertion of a REDIRECT tuple
with zero xid. The latter's not good either, since eventually
VACUUM will apply GlobalVisTestIsRemovableXid() to the zero xid,
resulting in either an assertion failure or a garbage answer.
In practice, since REINDEX CONCURRENTLY locks out index scans
till it's done, it doesn't matter whether it inserts REDIRECTs
or PLACEHOLDERs; and likewise it doesn't matter how soon VACUUM
reduces such a REDIRECT to a PLACEHOLDER. So in non-assert builds
there's no observable problem here, other than perhaps a little
index bloat. But it's not behaving as intended.
To fix, remove the failing Assert in spgFormDeadTuple, acknowledging
that we might sometimes insert a zero XID; and guard VACUUM's
GlobalVisTestIsRemovableXid() call with a test for valid XID,
ensuring that we'll reduce such a REDIRECT the first time VACUUM
sees it. (Versions before v14 use TransactionIdPrecedes here,
which won't fail on zero xid, so they really have no bug at all
in non-assert builds.)
Another solution could be to not create REDIRECTs at all during
REINDEX CONCURRENTLY, making the relevant code paths treat that
case like index build (which likewise knows that no concurrent
index scans can be happening). That would allow restoring the
Assert in spgFormDeadTuple, but we'd still need the VACUUM change
because redirection tuples with zero xid may be out there already.
But there doesn't seem to be a nice way for spginsert() to tell that
it's being called in REINDEX CONCURRENTLY without some API changes,
so we'll leave that as a possible future improvement.
In HEAD, also rename the SpGistState.myXid field to redirectXid,
which seems less misleading (since it might not in fact be our
transaction's XID) and is certainly less uninformatively generic.
Per bug #18499 from Alexander Lakhin. Back-patch to all supported
branches.
Discussion: https://postgr.es/m/18499-
8a519c280f956480@postgresql.org
Tom Lane [Mon, 17 Jun 2024 17:00:53 +0000 (13:00 -0400)]
Remove recordExtensionInitPriv[Worker]'s ownerId argument.
In the wake of the previous commit, we're not doing anything
with that argument. Hence, revert the portions of
534287403
that added that argument and taught the callers to pass it.
Passing the ownerId requires additional syscache lookups in
some code paths, which'd be fine if we were doing anything
useful with the info, but it seems inadvisable if we're not.
Committed separately since there's some thought that we might
want to un-revert this in future, in case it's decided that
storing the original owner ID explicitly in pg_init_privs
is worth doing.
Discussion: https://postgr.es/m/CAMT0RQSVgv48G5GArUvOVhottWqZLrvC5wBzBa4HrUdXe9VRXw@mail.gmail.com
Tom Lane [Mon, 17 Jun 2024 16:55:10 +0000 (12:55 -0400)]
Improve tracking of role dependencies of pg_init_privs entries.
Commit
534287403 invented SHARED_DEPENDENCY_INITACL entries in
pg_shdepend, but installed them only for non-owner roles mentioned
in a pg_init_privs entry. This turns out to be the wrong thing,
because there is nothing to cue REASSIGN OWNED to go and update
pg_init_privs entries when the object's ownership is reassigned.
That leads to leaving dangling entries in pg_init_privs, as
reported by Hannu Krosing. Instead, install INITACL entries for
all roles mentioned in pg_init_privs entries (except pinned roles),
and change ALTER OWNER to not touch them, just as it doesn't
touch pg_init_privs entries.
REASSIGN OWNED will now substitute the new owner OID for the old
in pg_init_privs entries. This feels like perhaps not quite the
right thing, since pg_init_privs ought to be a historical record
of the state of affairs just after CREATE EXTENSION. However,
it's hard to see what else to do, if we don't want to disallow
dropping the object's original owner. In any case this is
better than the previous do-nothing behavior, and we're unlikely
to come up with a superior solution in time for v17.
While here, tighten up some coding rules about how ACLs in
pg_init_privs should never be null or empty. There's not any
obvious reason to allow that, and perhaps asserting that it's
not so will catch some bugs. (We were previously inconsistent
on the point, with some code paths taking care not to store
empty ACLs and others not.)
This leaves recordExtensionInitPrivWorker not doing anything
with its ownerId argument, but we'll deal with that separately.
catversion bump forced because of change of expected contents
of pg_shdepend when pg_init_privs entries exist.
Discussion: https://postgr.es/m/CAMT0RQSVgv48G5GArUvOVhottWqZLrvC5wBzBa4HrUdXe9VRXw@mail.gmail.com
Andrew Dunstan [Mon, 17 Jun 2024 14:31:29 +0000 (10:31 -0400)]
Teach jsonpath string() to unwrap in lax mode
This was an ommission in commit
66ea94e, and brings it into compliance
with both other methods and the standard.
Per complaint from David Wheeler.
Author: David Wheeler, Jeevan Chalke
Reviewed-by: Chapman Flack
Discussion: https://postgr.es/m/
A64AE04F-4410-42B7-A141-
7A7349260F4D@justatheory.com
Peter Eisentraut [Mon, 17 Jun 2024 10:12:49 +0000 (12:12 +0200)]
pg_createsubscriber: Remove failover replication slots on subscriber
After running pg_createsubscriber, these replication slots have no use
on subscriber, so drop them.
Author: Euler Taveira <
[email protected]>
Reviewed-by: Hayato Kuroda <[email protected]>
Discussion: https://www.postgresql.org/message-id/
776c5cac-5ef5-4001-b1bc-
5b698bc0c62a%40app.fastmail.com
Peter Eisentraut [Mon, 17 Jun 2024 08:48:17 +0000 (10:48 +0200)]
pg_createsubscriber: Remove replication slot check on primary
It used to check if the replication slot exists and is active on
primary. This check might fail on slow hosts because the replication
slot might not be active at the time of this check.
The current code obtains the replication slot name from the
primary_slot_name on standby and assumes the replication slot exists
and is active on primary. If it doesn't exist, this tool will log an
error and continue.
Author: Euler Taveira <
[email protected]>
Reviewed-by: Hayato Kuroda <[email protected]>
Discussion: https://www.postgresql.org/message-id/
776c5cac-5ef5-4001-b1bc-
5b698bc0c62a%40app.fastmail.com